New research reveals those who donate money get a boost of happiness.

According to a study on MSNBC, spending money on others and giving to charity was significantly related to a feeling of happiness in the individual do-gooder. Is this the reason we always read about celebrities giving away millions? Is it because of the shot of happy?

	Courteney Cox and David Arquette are calling on friends to help raise $1 million for Epidermolysis Bullosa, a rare skin condition that affects children. Here's who already signed on....Jennifer Aniston, Orlando Bloom and Eva Longoria Parker among others. We assume this gang is all smiles this weekend.
	Brad Pitt and Angelina Jolie donated more than $8 million to the Jolie Pitt Foundation which included $1 million to Doctors Without Borders and a cool mil to Global AIDS Alliance. No wonder these two always seem so happy!
	And yes, even Paris Hilton does charity work! She was just spotted at Jakaranda Kinder Huis school in Pretoria, South Africa. It's not the impoverished refugees she promised to help months back after getting out of jail, but it's something! No word if she donated more than her time to the school. We guess if it were just time donated, she'd get only a smirk out of it.
	And of course the biggest giver of all, Oprah! Not only does she dole out boatloads of cash via Oprah's Angel Network, but her new reality show, Oprah's Big Give, probably gives Oprah a big grin.